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Commit 375ef2b1 authored by Gal Pressman's avatar Gal Pressman Committed by Saeed Mahameed
Browse files

net: Introduce netdev_*_once functions 



Extend the net device error logging with netdev_*_once macros.
netdev_*_once are the equivalents of the dev_*_once macros which are
useful for messages that should only be logged once.

Also add netdev_WARN_ONCE, which is the "once" extension for the already
existing netdev_WARN macro.

Signed-off-by: default avatarGal Pressman <galp@mellanox.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
parent 355368d5

include/linux/netdevice.h

+29 −0
Original line number Diff line number Diff line
@@ -4336,6 +4336,31 @@ void netdev_notice(const struct net_device *dev, const char *format, ...); 
__printf(2, 3)

void netdev_info(const struct net_device *dev, const char *format, ...);



#define netdev_level_once(level, dev, fmt, ...)			\

do {								\

	static bool __print_once __read_mostly;			\

								\

	if (!__print_once) {					\

		__print_once = true;				\

		netdev_printk(level, dev, fmt, ##__VA_ARGS__);	\

	}							\

} while (0)



#define netdev_emerg_once(dev, fmt, ...) \

	netdev_level_once(KERN_EMERG, dev, fmt, ##__VA_ARGS__)

#define netdev_alert_once(dev, fmt, ...) \

	netdev_level_once(KERN_ALERT, dev, fmt, ##__VA_ARGS__)

#define netdev_crit_once(dev, fmt, ...) \

	netdev_level_once(KERN_CRIT, dev, fmt, ##__VA_ARGS__)

#define netdev_err_once(dev, fmt, ...) \

	netdev_level_once(KERN_ERR, dev, fmt, ##__VA_ARGS__)

#define netdev_warn_once(dev, fmt, ...) \

	netdev_level_once(KERN_WARNING, dev, fmt, ##__VA_ARGS__)

#define netdev_notice_once(dev, fmt, ...) \

	netdev_level_once(KERN_NOTICE, dev, fmt, ##__VA_ARGS__)

#define netdev_info_once(dev, fmt, ...) \

	netdev_level_once(KERN_INFO, dev, fmt, ##__VA_ARGS__)



#define MODULE_ALIAS_NETDEV(device) \

	MODULE_ALIAS("netdev-" device)
@@ -4376,6 +4401,10 @@ do { \ 
	WARN(1, "netdevice: %s%s\n" format, netdev_name(dev),	\

	     netdev_reg_state(dev), ##args)



#define netdev_WARN_ONCE(dev, condition, format, arg...)		\

	WARN_ONCE(1, "netdevice: %s%s\n" format, netdev_name(dev)	\

		  netdev_reg_state(dev), ##args)



/* netif printk helpers, similar to netdev_printk */



#define netif_printk(priv, type, level, dev, fmt, args...)	\